Rich as you may know many, many years ago sometimes people confused the neutral or grounded conductor as its now known, as a grounding conductor and as equipment ground. They bonded the neutral to the equipment ground which is a big NO in todays world. Could be the Chinese have not got the "word" yet and are doing just that. The machine needs to be inspected by a qualified electrician who knows the Code and knows machine wiring. George posted a diagram that looks to be correct.
Surprise there are some electricians who are just installers and have never did any machine or control wiring.
Last edited by Bill George; 04-22-2014 at 4:31 PM.
Retired Guy- Central Iowa.HVAC/R , Cloudray Galvo Fiber , -Windows 10